6-Amino-1,8-dihydroimidazo[4,5-e][1,3]diazepin-4(5H)-one, a ring expanded analogue of guanine
作者:Peter K. Bridson、Huan Huang、Xiaoyan Lin
DOI:10.1039/p19960002257
日期:——
The preparation of 6-amino-1,8-dihydroimidazo[4,5-e][1,3]diazepin-4(5H)-one (15), an analogue of guanine which has a seven-membered ring in place of the usual six-membered ring, is described. Cyclization to form the aminodiazepine ring involves reaction of amide and isothiourea groups in a suitably substituted imidazole precursor. The method is also shown to be applicable to the synthesis of an acyclonucleoside
6-氨基-1,8-二氢咪唑并[4,5- e ] [1,3]二氮杂pin-4(5 H)-一(15)的制备,鸟嘌呤类似物具有七元环描述了通常的六元环。形成氨基二氮杂ze环的环化涉及酰胺和异硫脲基团在适当取代的咪唑前体中的反应。该方法还显示可用于无环核苷衍生物(20)的合成。